18 July 2022
: Case report 
A Case of a Rare Parathyroid Hormone (PTH)-Producing Neuroendocrine Tumor
Challenging differential diagnosis, Rare disease
Catherine Dianne Quinn1ABCDEFG*, Fihr Chaudhary2ABEF, Aron Gould-Simon3BD, Baorong Chen4BD, Harsimran Singh Bhandal5BEF, Uzair Chaudhary1ABDEGDOI: 10.12659/AJCR.935783
Am J Case Rep 2022; 23:e935783
Figure 5. Tumor was negative for PTH and TTF-1; S100, SOX-10, and PAX-8 were all negative. There is an absence of any color uptake beyond the blue cell background.